文章基本信息

标题：Popularity-Based Adaptive Content Delivery Scheme with In-Network Caching
本地全文：下载
作者：Kim, Jeong Yun ; Lee, Gyu Myoung ; Choi, Jun Kyun 等
期刊名称：ETRI Journal
印刷版ISSN：1225-6463
电子版ISSN：2233-7326
出版年度：2014
卷号：36
期号：5
页码：819-828
DOI：10.4218/etrij.14.0113.0090
语种：English
出版社：Electronics and Telecommunications Research Institute
摘要：To solve the increasing popularity of video streaming services over the Internet, recent research activities have addressed the locality of content delivery from a network edge by introducing a storage module into a router. To employ in-network caching and persistent request routing, this paper introduces a hybrid content delivery network (CDN) system combining novel content routers in an underlay together with a traditional CDN server in an overlay. This system first selects the most suitable delivery scheme (that is, multicast or broadcast) for the content in question and then allocates an appropriate number of channels based on a consideration of the content's popularity. The proposed scheme aims to minimize traffic volume and achieve optimal delivery cost, since the most popular content is delivered through broadcast channels and the least popular through multicast channels. The performance of the adaptive scheme is clearly evaluated and compared against both the multicast and broadcast schemes in terms of the optimal in-network caching size and number of unicast channels in a content router to observe the significant impact of our proposed scheme.
关键词：Content delivery network;in-network caching;request routing;content popularity